Avoid noise: these replacement dowels can help to reduce the noise made by your heel and the ground, so that it will not produce loudly sound when you are walking. Useful shoe replacement heels tips: heel tips make it comfortable for your sole of foot when you are walking. The rough surface can prevent slipping thus much safer. Color: Black. Package Included: 15 pairs of heel tips in 5 sizes of 8 mm, 9 mm, 10 mm, 11 mm and 12 mm. U-shaped; Metal pins in 3 mm diamenter. Please check the size chart image for reference before purchase. Material: this set of heel tips is made of TPU and iron of good quality, durable and wear-resisting. Last for a long time.