From Tekno RC:
Ryan Lutz demonstrating how we recommend building your Tekno RC shocks. This results in smooth and consistent shocks build after build. Below are the part numbers for the Tekno RC products used:
TKR6146 – Shock Cartridge Set (CNC, Delrin, EB/NB/ET/NT/SCT)
TKR1115 – Pivot Ball and Shock Multi-tool (aluminum)