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CAMVATE 15mm Single Rod Clamp Extension Adapter Install on Two 1/4-20 Thread Hole for DSLR DIY Accessory(Black Knob) - 2238
22mm in spacing distance for mounting groove It’s easy and flexible in use, solid and durable 15mm single rod clamp, hand tight via a knob Mounts via the built-in 1/4 mounting groove Material anodized aluminum alloy Dimensions 1.57 x 1.42 x 0.79 inches, Weight 51.3 Grams, model number Rank Professional Video Accessories 1697, Available August 30, 2019, Manufacturer CAMVATE, Color Black, Brand CAMVATE, Compatible Devices Camera, Dimensions LxWxH 1.57 x 

Price is $6.00
Price: $6.3