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Backer-On #9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (140-Pack) 23411 - The Home Depot
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Backer-On #9 x 1-5/8-in Star-Drive Cement Board Screws (140-Count) in the Specialty Screws department at Lowes.com
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Amazon.com: Backer-On 23421 9 by 2-1/4" Serrated Head Star Drive Cement Board Screws (100 Pack), No Size, No Color : Industrial & Scientific
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Amazon.com: Hard-to-Find Fastener 014973325732 Cement Board Self-Drilling Screws, 8 x 1-1/4, Piece-172 : Industrial & Scientific
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Backer-On #9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (140-Pack) 23411 - The Home Depot
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Backer-On #9 x 1-1/4-in Star-Drive Cement Board Screws (185-Count) in the Specialty Screws department at Lowes.com
![Backer-On #9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (140-Pack) 23411 - The Home Depot Backer-On #9 x 1-5/8 in. Serrated Flat Head Star Drive Cement Board Screws (140-Pack) 23411 - The Home Depot](https://images.thdstatic.com/productImages/773b039b-d2e0-49d3-b58a-beed802d9673/svn/backer-on-cement-board-screws-23411-77_600.jpg)