I have no idea what the little screw on top is for. Doesn't appear to be wired. I just crimped them and put a plastic cap on them. Worked great! Can't beat the price. More alligator clips than I use in my life :-)
WETOLS Angle Clamp 2Pcs Woodworking: Precision Tool for Perfect Angles in Woodworking Projects
11 Review
DM-202
14 Review
Multitool pliers LEATHERMAN Wave plus (832524/832526) black
17 Review
TOFL Woodworking Clamping Cabinets: πͺ The Ultimate Storage Solution for Workshop Positioning
12 Review