Step Wrench Thru Hull 1/2 in. - 1 1/2 in. | Buck Algonquin 3BTHW50150Step Wrench Thru Hull 1 2 in. 1 1 2 in. Buck Algonquin 3BTHW50150 1 2 in. 1 1 2 in. Thru Hull Step Wrench Buck Algonquin 3BTHW50150 Slotted tool holds multiple size Buck Algonquin thru hulls stationary to simplify tightening of thru hull nut. Thru hull step wrench designed for use with Buck Algonquin Thru Hulls Tool is stepped in size to fit Buck Algonquin thru hulls 1 2 in. to 1 1 2 in. Made of plated malleable iron 6 1 4 in. overall length