Non-Slip Rug Pads for Rug-ON-Carpet Anti-Slip. Designed for Medium Pile Carpet. 12 Pack. Intended to Limit Multiple Rugs/Exercise Mats/Door Mats from Moving On Medium Pile Carpet KEEP RUGS FROM SHIFTING ON TOP OF CARPET. RUG-ON-CARPET ANTI-SLIP PADS. DESIGNED FOR MEDIUM PILE CARPET. Place the pads in the carpet with the hooked side facing down and give each disc a 1/4 turn clockwise to anchor it into the carpet. Then remove the adhesive backing and place the rug on top of the anchored discs. 12 PACK - Intended to limit shifting of multiple small/medium rugs or a single large rug on medium pile carpet. Includes 12 X (5" Diameter) durable, plastic, barbed pads. Come with adhesive backing to adhere the pads to the underside of the rug - no glue required. DESIGNED FOR USE ON MEDIUM PILE CARPETS. *Not ideal for use on berber, commercial grade low pile carpets, or plush high pile carpets. Carpet Anchor Pads are also available in a 4 Pack or 8 Pack. PLEASE CLICK ON BY CARPET ANCHOR ABOVE TO SEE ALL OF OUR CARPET AND RUG ANTI-SLIP PRODUCTS.