1. Durable and reliable. 2. Small size, easy to carry. 3. Sets contents: 28 PCS 1/4 inch DRSOCKETS: 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 11, 12, 13mm, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2, 17/32, 9/16 inch 3 PCS 1/4 series star socket: 1/4, 5/16, 3/8 inch 2 PCS 3/8 series socket: 5/8 inch(16mm),15mm 1 PCS 1/4*3/8 adapter 1 PCS 3/8 ratchet wrench 1 PCS 3/8 plastic card 1 PCS 3/8*3 inch series post 1 PCS screw handle shank 1 PCS 3/8*21mm Mars set