Material: wood. Quantity: 2 pieces. Gauge options 00G (10 mm), 0G (8 mm), 14G (1.6 mm), 1/2" (12 mm), 9/16" (14 mm), 5/8" (16 mm), 11/16" (18 mm), 3/4" (20 mm), 7/8" (22 mm), 15/16" (24 mm), 1 1/16" (26 mm), 1 1/8" (28 mm), 12G (2 mm), 1 3/16" (30 mm), 8G (3 mm), 6G (4 mm), 4G (5 mm), 2G (6 mm). Durable and hypoallergenic, completely non-corrosive, lead and nickel free, also resistant to acid and alkali. Good for comfortable daily wear. Best Gift: A wonderful gift for many occasions such as anniversary, birthday, Christmas, Valentine’s Day and so on. It will be a great gift for your wife, girlfriend, boyfriend, family and even for yourself. Use scenarios - Everyday wear: natural wood provides a lightweight, comfortable option for stretched ears in casual or work settings. - Sensitive or metal-allergic skin: hypoallergenic and nickel-free design helps minimize irritation. - Style versatility: a two-piece set with multiple gauge sizes lets you rotate looks or use different sizes for future stretching plans.