Nickel plated tempered steel in a blister pack. T-pins are for every sewist, knitter and crafter. They can be used to hold heavy and loosely-woven fabric together. They are strong and that makes them perfect for pinning fabric to upholstery and sewing thick fabrics like canvas. They are ideal for blocking knitted materials. The T shape is easy to handle. Rust resistant. Size 38 mm - 1 1/2"