Full Technical Description: Electrolytic Tin Plated Seamless Copper Material; 1.37 Inch Overall Length; Copper Conductor Material; UL, CSA Approval; 4 AWG, 4 (Aircraft), 4 (An) Conductor Size; #8 to #10 Stud Size; 40 Die Index; 0.55 Inch W Pad Size; 1 Pad Hole(S); PENN-CRIMPS[R] Brand; Lug Type Ring Tongue; Wire Strip Length 1/2 Inch; With Inspection Window; BLY Model