The smooth and efficient cut that ION® is known for has gotten even better, thanks to a new, durable composite bottom auger design. This full-length 40-inch steel bit with a durable composite bottom ensures consistent blade engagement, even in dirty ice or while re-drilling old holes. A flat blade design allows for a smooth, metered cut with no jarring at the bottom of the hole. This model is a 10” hole diameter—which is perfect for the wheelhouse, or chasing large trophy fish.