Robust textile belt with 5 connection parts: 781 A: 1/4" square head socket drive, for 3/8" and 1/2" square head socket wrench inserts with ball lock; 781 B: 3/8" square head socket drive, for 1/4" and 1/2" square head socket wrench inserts with ball lock; 781 C: 1/2" square head socket drive, for 3/8" square head socket wrench inserts with ball lock.