Dumbbells by CAP Barbell. Details:The CAP 10 LB Coated Hex Dumbbell Weight, New Edition has been updated with robust packaging to ensure your dumbbell gets to you in great condition! Our dumbbell ends are made from ASTM A48 Class 20 grey iron with a durable coating and joined ...Dumbbells by CAP Barbell. Details:The CAP 10 LB Coated Hex Dumbbell Weight, New Edition has been updated with robust packaging to ensure your dumbbell gets to you in great condition! Our dumbbell ends are made from ASTM A48 Class 20 grey iron with a durable coating and joined together by a solid 1018 cold rolled steel chromed handle, providing a strong, durable product that will last for years to come.