Columbia ONE Handle
Is an interchangeable handle system that allows one support handle to be used with Corner Rollers, Angle Boxes, Angle Heads, and Nail Spotters! The base handle C1H fits the corner roller without adapters, as well as the new design corner applicator and nail spotter without adapters. The new, optimal 1.25" diameter makes Columbia handles the most ergonomic in the industry. The C1H features a D-shaped fitting that securely positions the handle in the Corner Applicator and positively prevents the tool from rotating during use.