Precise, stainless steel keys. Used for pulley and drive shaft applications where corrosion resistance is a factor. Handy kit for shop toolroom or toolbox. On hand when needed saves time and money. Plastic compartment box is easy to store. The Precision Brand 66-piece stainless steel woodruff key Assortment contains: 5 each 1/16 x 3/8 in, 3/32 x 3/8 in, 1/8 x 3/8 in, 1/16 x 1/2 in, 3/32 x 1/2 in and 1/8 x 1/2 in, 4 each 1/8 x 5/8 in, 5/32 x 5/8 in, 3/16 x 5/8 in, 1/8 x 3/4 in, 5/32 x 3/4 in, 3/16 x 3/4 in and 1/4 x 3/4 in, 3 each 3/16 x 7/8 in and 1/4 x 7/8 in and 2 each 1/4 x 1 in.