【WILD SIZE SELECTION】Long allen hex bit socket set contains: 8 Pcs. - 3/8" Dr. Bit Sockets - SAE: 1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 3/8”, 10 Pcs. – 3/8” Dr. Bit Sockets - Metric: 3, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10mm. Overall Bit Socket Length: 5.9 inches / 150 mm. 【PREMIUM MATERIAL】The socket base is made of chrome vanadium steel with stronger hardness after heat treated and provides higher torque. 【SPECIAL DESIGN】Each bits head has a unique chamfering design, which makes it easier to insert the bit head into the fastener. And increase the contact area with the fastener, reduce wear, protect the fastener. 【LONGER DESIGN】Extra-long design allow bit to reach deep into especially narrow, recessed areas. Insert smoothly with precision chamfered bit ends. 【EASY TO STORE】 Allen hex bit sockets are all placed in a storage box, easy to access at any time. If you encounter any problems while using our products. Please contact us by email, our professional after-sales team will contact you and solve your problems in time. 【WILD SIZE SELECTION】Long allen hex bit socket set contains: 8 Pcs. - 3/8" Dr. Bit Sockets - SAE: 1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 3/8”, 10 Pcs. – 3/8” Dr. Bit Sockets - Metric: 3, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10mm. Overall Bit Socket Length: 5.9 inches / 150 mm. 【PREMIUM MATERIAL】The socket base is made of chrome vanadium steel with stronger hardness after heat treated and provides higher torque. 【SPECIAL DESIGN】Each bits head has a unique chamfering design, which makes it easier to insert the bit head into the fastener. And increase the contact area with the fastener, reduce wear, protect the fastener. 【LONGER DESIGN】Extra-long design allow bit to reach deep into especially narrow, recessed areas. Insert smoothly with precision chamfered bit ends. 【EASY TO STORE】 Allen hex bit sockets are all placed in a storage box, easy to access at any time. If you encounter any problems while using our products. Please contact us by email, our professional after-sales team will contact you and solve your problems in time.