The heavy-duty Spiral Mixer mixes most viscous liquids including drywall mud, paint, cement and more. The powder coated, all-steel 1-gallon mixer fits 3/18 in. and larger drills for quick and easy mixing, while the 5-gallon mixer fits 1/2 In. and larger drills. Size: 5 Gal. Shaft Length: 23-1/4" Mixer Size: 4-3/4" Mixer Material: Steel Weight: 1 Lb.