[150PCS SILVER EARRING POSTS]: A plastic box contains 150pcs ball post earring stud and 150pcs jump rings, 150pcs 201 stainless steel and 150pcs plastic ear nuts , so you don't have to buy extra. The sufficient quantity can meet your different needs, making it very suitable for manual diy production.[SILVER EARRING STUDS]: The silver stainless steel earring ball posts design is understated and elegant, suitable for various styles and occasions. It can be worn by different people and ages, making you more elegant.[SIZE AND CONTENT]: Ball post earring stud * 150pcs: about 16mm(0.63in) long, beads: 5mm, hole: 1.6mm, pin: 0.7mm. 201 stainless steel ear nuts * 150pcs: about 6x4.5x3mm(0.24x0.18x0.12in), hole: 0.7mm. Plastic ear nuts * 150pcs: about 4x4mm(0.16x0.16in), hole: 1mm. Jump rings * 150pcs: about 5x0.6mm(0.20x0.02in). Come with plastic box * 1pc.[GOOD QUALITY MATERIAL]: The ball post earring stud are made of 202 stainless steel. And the ear nuts are made of 201 stainless steel and plastic. The jump rings are made of 304 stainless steel. Post earring making kit is not easily discolored or broken, comfortable to wear and suitable for long-time use.[PERFCT GIFTS]: You can hang beads or accessories, design different styles of stainless steel earring ball posts, handmade gifts, and give them to friends and family on Christmas, Thanksgiving, Valentine's Day, and birthdays.