After trying this product I am thrilled to have found such high-quality biscuits and plugs for my industrial hardware needs .The 20-pack provides a great value for the price and I have found them to be durable and long-lasting. The plastic is sturdy and doesn't crack easily. One downside is THAT they only come in one size, so they may not be suitable for all applications. Overall, I highly recommend them to anyone in need of industrial and scientific biscuits and plugs..