Mounting Clips for Counter-top Kitchen Sinks, 8 Pcs Packed - By Plumb USA 57301 For Insatllation of Stainless Steel Kitchen Sink. Includes 8 clips and 8 screws. Screw Length: 2 1/4". For Counter-top Installation Only. For "U"-type Channeled Sinks. Not for Under-mount Sinks.