Made by precision machined aluminum, the Kupo Mitchell to Bowl Adapter allows you to use Bowl-based 150mm fluid heads with Mitchell-based gear on your tripod, dollies and other compatible equipment. No tool is required for effortless operation. All Mitchell to Bowl Adapters (75mm and 100mm also available) come with 5 pre-drilled countersunk holes allowing for set-up on a Hi-Hat board or cheese plate.