Features: Madeofsuperbchrome vanadium steelmaterial,itislong-lastingandendurable. Multifunctional piecesprovidesyouto mix and m-atchdiverse driver sizesofsockets, ratchet handles, extension bars, corded and cordless driversect. Easytohandleandoperate,compactdesignandlightweight,portable. Designed for Impact use and feature spring-loaded detent balls to securely l-atch sockets,betteruseperformance. Nicel-ifeassistancefor DIYandcarrapairing. Specifications: Material:chrome vanadium steel Type:Type1: 24pcs/ Type 2: 16pcs/ Type 3:8pcs/ Type 4: 7pcs(Optional) Package size: 120 * 90 * 30mm/ 4.7 * 3.5 * 1.1inches(Length * Width * Height) Package weight: 600g/ 340g/ 260g/ 250g Packing list: 1 Set *Impact Extension & Socket Adapter