Describe：

①100% brand new and unused

②The clamp is make of the high-quality Aluminum. The side which in touch the violin's fingerboard is the concave and there is a rubber pad to safeguard the fingerboard can't be damaged.

③The measuring tools are made of the copper. it can be used for the 4/4 violins，good workmanship

④The woodworking and violin producer tool ，Very durable