diff --git a/CAD/bolt_parameters.scad b/CAD/bolt_parameters.scad
index c57acfda..29b5e616 100644
--- a/CAD/bolt_parameters.scad
+++ b/CAD/bolt_parameters.scad
@@ -4,7 +4,7 @@
 // screw length step - minimum difference in length between two types of screws
 basic_screw_length = 5;
 
-
+plastic_screw_head = 5.2;
 plastic_screw_diameter = 2.2;
 plastic_screw_trought_diameter = 2.5; // otvor, kterym sroub lze prostrcit
 
diff --git a/CAD/src/888_3007.scad b/CAD/src/888_3007.scad
new file mode 100644
index 00000000..83346ac0
--- /dev/null
+++ b/CAD/src/888_3007.scad
@@ -0,0 +1,57 @@
+// Jiny drzak ocasni tyce
+
+include<../parameters.scad>
+
+module 888_3007()
+{
+    w=base_width;    
+    d=tail_pipe_d;
+    
+    screw_head=plastic_screw_head+0.2;
+    screw_hole=plastic_screw_diameter;
+    screw_outerhole=plastic_screw_trought_diameter+0.2;
+    screw_l=8;
+    
+    o=10;
+    l=screw_head+1;
+
+    difference()
+    {
+        hull()
+        {
+            rotate([90,0,0])
+                cylinder(d=l,h=w,center=true,$fn=60);
+            translate([o+d/2+l/2,0,0])
+                rotate([90,0,0])
+                    cylinder(d=l,h=d+4,center=true,$fn=60);
+        }
+        
+        //trubka
+        translate([o,0,0])
+            cylinder(d=d,h=l+2,center=true,$fn=60);
+        
+        //naříznutí
+        translate([o+d/2,0,0])
+            cube([d,1,l+2],center=true);
+            
+        //šroubek
+        translate([o+d/2+l/2,0,0])
+                rotate([90,0,0])
+                {                    
+                    cylinder(d=screw_hole,h=50,center=true,$fn=30);
+                    cylinder(d=screw_outerhole,h=50,$fn=30);
+                    translate([0,0,3])                         
+                         cylinder(d=screw_head,h=50,$fn=30);
+                }
+                
+        //šroubky do bočnic
+        rotate([90,0,0])
+        for(i=[-1,1])
+            translate([0,0,i*w/2])
+        cylinder(d=screw_hole,h=20,center=true,$fn=30);       
+        
+    }
+}
+
+
+888_3007();
\ No newline at end of file
diff --git a/CAD/src/888_3008.scad b/CAD/src/888_3008.scad
new file mode 100644
index 00000000..684e8301
--- /dev/null
+++ b/CAD/src/888_3008.scad
@@ -0,0 +1,76 @@
+include<../parameters.scad>
+
+module 888_3008()
+{
+    d1=tail_pipe_d;
+    d2=mount_tube_out_d;
+ 
+    screw_head=plastic_screw_head+0.2;
+    screw_hole=plastic_screw_diameter;
+    screw_outerhole=plastic_screw_trought_diameter+0.2;
+    screw_l=8;
+
+    difference()
+    {
+        //kvluli tisku kašlu na elenagci
+        /*hull()
+        {
+            cylinder(d=d1+2,h=d2+2,center=true,$fn=60);
+            translate([-d1/2-screw_hole,0,0])
+                rotate([90,0,0])
+                    //cylinder(d=screw_head,h=screw_l+2,center=true,$fn=60);
+                    cube([screw_head,screw_head,d1+2],center=true);
+            translate([d1/2+d2/2+1,0,0])            
+                rotate([90,0,0])
+                {
+                    cylinder(d=d2+2,h=d1+2,center=true,$fn=60);
+                    translate([d2/2+screw_hole,0,0])
+                        rotate([90,0,0])
+                            cylinder(d=screw_head,h=screw_l+2,center=true,$fn=60);
+                }
+        }*/
+        translate([(d1+d2+1+2*screw_head)/2-d1/2-screw_head,0,0])
+            cube([d1+d2+1+2*screw_head+1,d1+2,d2+2],center=true);
+        
+        //trubka
+        cylinder(d=d1,h=20,center=true,$fn=60);
+        
+        //naříznutí
+        translate([-d1/2-1,0,0])
+            cube([d1,1,d2+3],center=true);
+            
+       //šroubek
+       translate([-d1/2-screw_head/2,0,0])
+       rotate([90,0,0])
+       {            
+            cylinder(d=screw_hole,h=50,center=true,$fn=30);
+            cylinder(d=screw_outerhole,h=50,$fn=30);
+            translate([0,0,3])
+                cylinder(d=screw_head,h=50,$fn=30);
+       }
+        
+        //druhá trubka
+        translate([d1/2+d2/2+1,0,0])            
+                rotate([90,0,0])
+                {
+                    //trubka
+                    cylinder(d=d2,h=20,center=true,$fn=60);
+                    //nariznutí
+                    translate([d2/2+1,0,0])
+                        cube([d2,1,d1+3],center=true);
+                    //šroubek
+                    translate([d2/2+screw_head/2,0,0])
+                    rotate([90,0,0])
+                    {            
+                         cylinder(d=screw_hole,h=50,center=true,$fn=30);
+                         cylinder(d=screw_outerhole,h=50,$fn=30);
+                         translate([0,0,(screw_l-(d2+2)/2)])                         
+                             cylinder(d=screw_head,h=50,$fn=30);
+                             
+                    }
+                }
+    
+    }
+}
+
+888_3008();
\ No newline at end of file
diff --git a/CAD/src/printplate/printplate_888_3007.scad b/CAD/src/printplate/printplate_888_3007.scad
new file mode 100644
index 00000000..5eb0c6d5
--- /dev/null
+++ b/CAD/src/printplate/printplate_888_3007.scad
@@ -0,0 +1,7 @@
+//@set_slicing_config(../../slicing/default.ini)
+
+include <../../parameters.scad>
+use <../888_3007.scad>
+
+888_3007();
+
diff --git a/CAD/src/printplate/printplate_888_3008.scad b/CAD/src/printplate/printplate_888_3008.scad
new file mode 100644
index 00000000..46be14c3
--- /dev/null
+++ b/CAD/src/printplate/printplate_888_3008.scad
@@ -0,0 +1,8 @@
+//@set_slicing_config(../../slicing/default.ini)
+
+include <../../parameters.scad>
+use <../888_3008.scad>
+
+rotate([0,-90,0])
+888_3008();
+