We offer standard and Olympic dumbbell handles by Body Solid and Troy USA Sports. They are designed for home use and are a compact way to create full body workouts in a small area. The Olympic size dumbbell handles feature 2 inch diameter sleeves and are designed to work with 2 inch diameter hole Olympic plates. Standard dumbbell handles feature 1 inch diameter sleeves and are designed to work with 1 inch diameter hole plates. Interchangeable weight dumbbell handles are strictly designed for home use and are recommended for general fitness needs.