Bondhus - Hex - 4.0mm Stubby Ball End L-wrench (1pc Bulk) - 26560-1 Fits into tight spaces standard hex keys can not Eliminates the need to trim and file the short arm Tighter inside radius means full smoooth entry into screw head Chamfered short arm eliminates burrs; Ball End inserts into a screw at a 25degree angle Bulk Package of 1