4 Sizes: ID 0.5"/13mm thickness 3.5mm, ID 0.75"/19mm thickness 3.5mm, ID 1"/25mm thickness 4mm, ID 1.2"/31mm thickness 4mm. Package : Gold Spring Clip: 4 PCS inner diameter 13mm thickness 3.5mm, 4 PCS inner diameter 19mm thickness 3.5mm, 4 PCS inner diameter 25mm thickness 4mm, 4 PCS inner diameter 31mm thickness 4mm, Silver Spring Clip: 4 PCS inner diameter 13mm thickness 3.5mm, 4 PCS inner diameter 19mm thickness 3.5mm, 4 PCS inner diameter 25mm thickness 4mm, 4 PCS inner diameter 31mm thickness 4mm, Black Spring Clip: 4 PCS inner diameter 13mm thickness 3.5mm, 4 PCS inner diameter 19mm thickness 3.5mm, 4 PCS inner diameter 25mm thickness 4mm, 4 PCS inner diameter 31mm thickness 4mm,Widely used in making key rings and dog collars, handbags, belts, ornaments and so on. 4 Dimensions: Inner diameter 0.5"/13mm thickness 3.5mm, inner diameter 0.75"/19mm thickness 3.5mm, inner diameter 1"/25mm thickness 4mm, inner diameter 1.2"/31mm thickness 4mm. 4 sizes and 3 colors to meet your various needs, spring clamp design, quick and easy to open and close. Made of zinc alloy, it is lightweight and durable. Colors: Gold, silver, black.Number of Pieces: 4. Brand: Hamineler. Color: Multicolor. Date First Available: October 25, 2022. Best Sellers Rank: #18,037 in Arts, Crafts & Sewing. Customer Reviews: 5.0 out of 5 stars 1 rating 5.0 out of 5 stars. Country of Origin: China. : B0BKFHHKVD. Department: Unisex. Item Weight: 10.2 ounces. Package Dimensions: 6.22 x 4.76 x 0.87 inches.