This Heavy Duty Knuckling Block Has A Variety Of Shapes & Sizes For Shaping Of Metal & Wire. All Six Sides Have Been Utilized. Shapes Include: Half-sphere, V Shape, Rectangular & More.* 6-sided, 3" X 2" X 2" * 6 Half Sphere, 10 V-Shape, 4 Rectangular Groove * Perfect for Bending, Grooving, Shaping * Harden Steel, Tempered 50 degree * 2 Lbs, 15.6 Oz