My buddy has 20 sacks with his slot CB : rMadden

Part Number : TBM24150 T-slot bolt TBM1250 to TBM24200 slot m24 Forged steel, rolled thread, milled T-slot guide faces, heat treated Tensile strength class Thread : M24 slot 633 NEW LOCKBOX with BEST 4-Slot Mount + AoE Companion! (long grind

slot advantage play Is it the rubber covered slot at the rear of the motor? If it is, what is the screw head size in there? I've tried to look, but can't see well