Hangzhou Tengtu Radiant Glass Co. Ltd has a professional manufacturer of glass smoking products. Established in 2008, till now, we have had 12 years of experience. All of our products are handmade and blown with borosilicate glass and 100% quartz glass. (smoke pipes, glass bongs, glass bowls, quartz banger, grinder, glass smoking accessories) we have Foreign trade team. High-Quality Products, Competitive Price, Credit Paramount, and considerable customer service. The measurement error is inevitable as our products are handmade, If you need the product with precise measurements, please get in touch with us first. We pack all items with extreme caution, using a proprietary packing method to ensure your item arrives in perfect condition..syi