Our spring buckle hook is gourd shape, made of high quality aluminum alloy, ensuring durability and reliability. Perfect for keychain, clips for keys, bottle hook, backpack clip, flag hook, fishing tools fitting, dog leash hook, wire connectors, quick link chain connector, chain link, chain clips, metal clips, rope clips, spring clips fasteners, etc..Features:1. Aluminum alloy material density is low, light weight, high strength and anti-corrosion, very durable.2. Our snap hooks are easy and smooth to open and close with one hand, which allows for quick attachment of keychains, backpacks and ropes.3. Our carabiner clips are versatile and can be used in a wide range of scenarios, no burden to carry, and hardness is not easy to break, can be used in daily and outdoor.Material: Aluminum alloySize(LW): 60 x 28 x 5mm/ 2.4 x 1.1 x 0.2(L*W*Max. Dia). Package Content: Set of 8Color: BlackNotes:1. Due to the different measure ways or tools, there may exists slight deviation, hope that you don't mind.2. Not suitable for climbing adventures.