- Protect and Grip Thimbles offer the perfect combination of soft, elastic material with the safety of a metal thimble cap. The scallop design offers breathability, keeping your finger cool. Its excellent elasticity helps the thimble form naturally to your fingertip for a light fit. Safe and smart, the ridged and dimpled metal cap holds the needle tip in place and pushes needles in safely. This new thimble provides comfort and lightness. Clover #6025 Small - 14.5mm (9/16") diameter size.