PTFE-Coated stainless steel, individually wrapped and bulk packed. Break in half lengthwise for use (protect fingers and use eye protection).Suitable blade for PELCO easiSlicer™, Microslicer™, Vibratome® and other brands of vibratory microtomes. Suitable alternative to Feather® blades when used as is (unbroken) in McIlwain Tissue Chopper. •Length: 42.9mm (1.69") •Cutting Edge Length: 37.1mm (1.46"") •Width: 21.7mm (0.855"") •Thickness: 0.11mm (0.004"")"