Perfect screwdriver set including screwdriver handle， universal connecting rod， extension rod， tweezers and a lot of screwdriver head. Suitable for smart phone， PC or other device maintenance.Features:51 in 1， including 47 pcs of screwdriver head and 4 tools， can meet different demands.Specially designed screwdriver handle， convenient to operate and comfortable to grasp.With a universal connecting rod， an extension rod and a pair of tweezers， suitable for special need.All tools are well protected by a plastic case， convenient to carry.Suitable for smart phone， PC or other device maintenance.Specifications:Material: PVC + Chrome Vanadium Steel(6150#)Handle Length: 11cmUniversal Connecting Rod Length: 12.5cmExtension Rod Length: 11.7cmTweezers Length: 11cmPackage Size: 14.5 * 15 * 3cm / 5.7 * 5.9 * 1.2inPackage Weight: 356g / 12.5ozPackage List:4 * Tools47 * Pcs of Screwdriver Head