In order to properly and securely mount the shift knob on to the shifter, and to mate the internal crush sleeve between the rod and the knob, often some persuasion is required. STOMSKI RACING's Gearshift Knob Installation Tool ensures your shift knob is protected during installation, protecting both the shift pattern insert, and the knob itself from damage or marring. Precision machined from UHMW for years of service and protection.