The Oneway 3946 Big Bite Chuck Spur (the flat plate in center of the chuck jaws shown in photo) is an economical way to take advantage of the holding power of any of Oneway's scroll type chucks to easily mount and turn burls and highly figured woods to their best advantage. Its two-prong spurs work better than four-prong spurs because it makes it so much easier to tilt the piece and drive it into the grain.
At 3-3/4" across the Big bite easily drives pieces up to 24 inches in diameter while remaining safely inside the body diameter of even Oneway's smallest chuck. Spur has a 1"; locating plug to securely center it in the chuck and it is grabbed crosswise by the jaws for a secure hold. The teeth and point are 60 degrees so it will bite deeply and easily. Canada