Made of stainless steel material, this set of extender chains is eco-friendly and safe. Perfect for using on necklace, bracelet and jewelry making supplies. The chain extender set is in different lengths, different sizes to meet your different needs. Features - Color: Golden . - Material: Stainless Steel . - Size: Approx. 25mm+50mm+75mm+100mm+125mm+150mm. - Quick to connect: Features the lobster clasp, effortless to connect most jewelry clasps, make your handmade necklaces, bracelets process easier. - Sturdy material: stainless steel, have strong holding strength to keep jewelry more secure; Easily store and carry these small extender chain. - These are good choices for DIY jewelry findings making, easy to put on or take off, convenient to use and enable you to add the length of your jewelry easily. - Multiple sizes meet your different needs. - Classic lobster claw clasps, easy to put on or take off; Convenient to use.