The Koul Tools Surseat P51B Flare Lapping Tool is designed to remove irregularities in flared tubing, leaving an ideal sealing surface. The tool features an easy-to-use clip mechanism for the interchangeable 37-degrees and 45-degree lap heads to polish steel, stainless steel, and copper tubing. The shape and size of the tool make it easier to work in tight spaces, and the lock-spring system secures the tube seamlessly in the tool’s cavity.