Product features easy to use. long lasting. made of 1st class durable stainless steel. mechanical arm with spring mechanism allows you to cap and cork the glass bottle. there are screw holes on the bottom plate. it can close up to 24 cm high bottles. the product is sent ready to use. patent information the product is an original patented product. it is not an unpatented sub-industry and weak product sold in the market. when you receive the product, you can see the patent information on the product package content bottle closing tool 250 pieces of crown caps (in mixed colors and patterns) material stainless steel more than 100 stocks are offered to be sold at the campaign price. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.