The screws have a 5mm thread instead of the 12/24 thread that is standard on most other drums. This allows for finer tuning of the drum. - suitable for: DW Design, Performance, Collectors until the end of 2014 and PDP Seen cheaper somewhere else? No problem – send us your price proposal! All of our items have a 30-day return policy without explanation. Sheet music, reading material and software cannot be exchanged. The General Terms and Conditions of Zoundhouse GmbH & Co. KG apply. The European Union provides an online platform (OS platform) for the out-of-court settlement of consumer disputes: When purchasing multiple items: Add the items to your shopping cart and select “Request total from buyer” at the top right. If you intend to buy multiple items: put them into your shopping cart an.