MULTI-SIZE - Comes with 12mm, 8mm, and 10mm interchangeable grommet setting dies to meet different size needs. Comes with 900 sets of grommet supplies (300 sets of each size) and hollow hole punching tool sets. PORTABLE & LABOR-SAVING - Lightweight & easy to carry. The ergonomic handle is comfortable to hold and automatically returns after pressing. It can easily be operated with only one hand. The handle is covered with PVC rubber for a comfortable grip. ONE-PRESS SETTER - No need to punch a hole before setting. The magnetic upper die and the below groove match the eyelet so well that you don't have to align the eyelets by yourself. Just put them in and press the handle, then a grommet is set. If you need to pre-hole punch, there is a punching tool and a nylon cushion for your convenience. DURABLE MATERIAL - Made of high-quality metal with special plastic material, which is anti-friction, anti-skid, and comfortable to hold. WIDE APPLICATION - BEAMNOVA practical grommet kit can apply to tarps, PVC clothes, canvas, leather, paper, and so on. Often used for banners, signs, awnings, posters, scrapbooking, corsets, belts, bags, shoes, etc. Ideal for craft and industrial use.