Product features A. 【Duabile material】: The mechanic tools of sockets set are made of premium chrome vanadium steel with heat treatment, which ensures an increase in strength in heavy-duty applications and rust-resistance of products. B. 【Dual measurements】: Both metric and standard sockets are included in this ratchet set. The sizes are stamped into each socket for easy-to-read visibility. C. 【Reversible ratchet】: This socket set includes a 3/8 inch 72-tooth reversible ratchet with quick release mechanism for easy operation and efficient working performance. D. 【Poratable carrying case】: The ratchet and socket set comes with a durable carrying case for ultimate portability and easy organization. The metric and standard socket set delivers ultimate versatility: cars, trucks, motorcycles, bicycle maintenance and so on.  both in the garage and on the jobsite,It helps you get every job done. E. 【Set includes】: 16 x metric socket: 4,4.5,5,5.5,6,6.5,7,7.5,8,9,10,11,12,13,14,16mm 14 x SAE inch socket:7/32'',9/32'',5/16'',3/16'',5/32'',1/4'',11/32'',3/8'',13/32'',7/16'',15/32'',1/2'',17/32'',9/16''. Product description 1. Products include： A. Ratchet / Handle:1 x 1/4'' Handle;1 x 3/8'' Ratchet wrenc;1 x Rotating plate B. Hex Socket:16 ×Metric Socket(4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 11, 12, 13, 14, 16mm);14 ×SAE Socket (1/4 inch Drive)5/32''(3.96mm), 3/16'' (4.76mm）7/32'' (5.55mm）1/4'' (6.35mm），9/32'' (7.14mm），5/16'' (7.93mm), 11/32'' (8.73mm), 3/8'' (9.52mm),13/32'' (10.31mm), 7/16'' (11.11mm),15/32'' (11.9mm), 1/2'' (12.7mm), 17/32'' (13.49mm), 9/16'' (14.28mm） C. 8 Point Socket:3 × Metric Socket: 1/4'' (6.35mm), 5/16'' (7.93mm), 3/8'' (9.52mm） D. Spark Plug:1 x Spark Plug; 3/16'' x (21mm) E. Adaptor / Extension:1 x 1/4-inch ( M ) x 3/8-inch ( F ) Adapter 1 x Extension bar. 2. Product Details： Socket Type:Universal Action:Ratcheting Number of Pieces:40 Size:1/4 in Custom Bundle:No Item Diameter:‎9.57 x 5 x 1.42 inches Material:Alloy Steel Type:Socket Set System of Measurement:Standard (SAE) Model:Ratcheting Socket Wrench Set Features:Adjustable Head Style:Hex Item Weight:2.18 pounds 3. Matters needing attention： Please take care when using the hand nail tools safely.If you have any problems during use, please contact me immediately in the first instance. 4. Seller expectations： If you are satisfied with our products,remember to give us a good comment. for our services and products.Ifyou have better suggestions.please feel free to leave us a message in the comment areaCustomer satisfaction is our aim.