Master Series Hardware Nail and Screw Silicone Urethral Sounds from XR Brands. Two irresistible shapes for your penetrative pleasure! Both sounds are shaped like heavy duty hardware, tempting you with a smooth, hexagonal nail and a spiral textured screw. The flexibility and silkiness of the material ensures a comfortable insertion as it conforms to your inner curves. Fulfill your most hardcore fantasies with this dastardly duo! Made of premium silicone, these sounding rods are hypoallergenic and easy to clean with mild soap and warm water. Do not use with silicone lubricant. Measurements both sounds are 6 inches in length. Nail is .3 inch in diameter. Screw is .25 inch in diameter. Material Silicone. Color Black. Disclaimer: these products as with all products on this site are supplied AS IS. No warranty is given either implied or expressed. Products are intended as novelty only, and no representation is made or implied as to their suitability or safety for any particular use. Purchasers use the products entirely at their own risk. The manufacturer or re-seller is not liable for any direct, indirect, incidental or consequential damage or loss howsoever arising caused by use or misuse of the products. This includes, but is not limited to, damage to the products and personal injury or damages due to use or misuse.