Internal grinding spindle 25 16 6mm. Grinding depth 3 - 90mm.Installation dimension(center hole) 25 40mm. Suitable for lathe machine 6132 - 6140. Packing size 430 380 420mm. If you receive a defective item, you need to return or discount. Or sent you a replacement if you need. We will answer your question in 48 hours, deal with one time every day. Saturday and Sunday is our holiday, If you send me message on Saturday and Sunday, we can't reply you in time. But please no worries and we will reply you on next Monday immediately. The item "220V&38 External Sharpener Grinding Machine Post Grinder Internal Lathe Tool-New" is in sale since Friday, December 7, 2018. This item is in the category "Business, Office & Industrial\CNC, Metalworking & Manufacturing\Metalworking Equipment\Metalworking Lathes". The seller is "2016newbeginning" and is located in china. This item can be shipped worldwide.