5.8mm Drill Access Hole for 20X20B
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5.8mm Drill Access Hole for 20X40B / 30X30B / 30X60RB / 30X60B / 30X30WG 30B / 30X30WG 40B
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11mm Drill Access Hole for 30X30B / 30X60RB / 30X60B / 30X30WG 30B / 30X30WG 40B
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9.8 mm Drill Access Hole for 22.5X45B / 45X45B / 45X45HB / 45X90B / 60X60B / 60X90HB / 90X90B
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