1. Product: Stainless Steel 4-arm 204mm Spider to suit medium-sizedglass panels With cute and nice-looking features,stainless steel 4-arm spider suits well medium-sizedglass panels of glass wall projects. We have 1,2,3,4 armseries options to meet your requirements with best performance. 2. Spec: a. Centre-to-centre distance between two arms: 204mm. b. Height: 40mm. c. Round hole: O.D.isdia. 36mm & I.D.is dia. 20mm. d. Slot hole: 20x15mm. e. Central hole: dia. 15mm. 3. Other info: 1) ISO certificate: We was certified TUV ISO 9001-2000 in 2003, and certified TUV ISO 9001-2008 in 2009. 2)Material: We offer qualified stainless steel 304 or 316 as per American standard (AISI). Test report of material is available upon your request. 3) Export percentage: 81 - 89% of our products are for the export.