Multi-facet needle bevel enables smooth,virtually painless injections * Automatic polishing and lubrication processes * Strictly Quality Control procedures ensure consistent per formance * Surgical-grade stainless steel 28G Blue-green 0.36mm 13mm(1/2 ) 27G grey 0.40mm 13mm(1/2 ) 26G brown 0.45mm 16mm(5/8 ) 25G orange 0.50mm 16mm(5/8 ) 24G purple 0.55mm 19mm(3/4 ) 23G blue 0.60mm 25mm(1 ) 22G black 0.70mm 32mm(1 1/4 ) 21G green 0.80mm 38mm(1 1/2 ) 20G yellow 0.90mm 38mm(1 1/2 ) 19G beige 1.00mm 38mm(1 1/2 ) 18G pink 1.20mm 38mm(1 1/2 ) 16G white 1.60mm 38mm(1 1/2 )