What Size of Bolts are Used in the WK-4S Caster Kit?
Written by Arturo Perez
Updated at January 9th, 2026
Question:
What size of bolts are used in the WK-4S caster kit?
Answer:
There are 16 pieces of 5/16-18 x 1 bolts in the kit, 4 pieces for each caster. The WK-4S compatible speakers (such as the VRX, SRX700, and SRX800 series) have a 5/16-18 T-nut inserted in the cabinet.