M4 wide x 10mm long x 4 Grub Screws
9.95mm long (end to end)

Designed to fit the HSP (Hi Speed) Sonic. May fit other 1/10 HSP model cars but please check part number in your manual is identical to the one below.
Part Number: 02177
Made by: HSP
 
Marterial: Metal
Colour: Black