Modern U-shaped groove

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{"cid":"174206","pid":"27905670","pimg_url":"\/\/img1.tradegrowthhub.com\/13\/9c\/3ada0742d712\/product\/101378265_s-w400xh400.jpg","name":"Modern hot sale carbon steel U spline, carbon steel card spline profile, rail spline for stairs","attrs":{"Price":"$7.30(10 - 49 Sets) $6.08(50 - 150 Sets) $4.00(>=151 Sets)","MOQ":"10 Sets","Delivery Time":"Negotiable"}}

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