Hillman 1/4 In. x 1-1/4 In. Flat Head Tapper Concrete Screw (25 Ct.) BugMax For 3-1/2" to 4" drain

For 3-1/2" to 4" drain opening

slotted female thread

opening and smooth flush finish

Dishwasher safe stoneware and tempered glass lid

and it could help prevent allergic reactions

Hillman 1/4 In. x 1-1/4 In. Flat Head Tapper Concrete Screw (25 Ct.) BugMax For 3-1/2" to 4" drainDesigned to fasten objects into concrete, brick and block. Specially hardened high low thread actually cuts thread into masonry materials. A simple 2 step operation, drill then drive. Tappers may be removed and re inserted in the same hole. Use for window installations, interior hand rails, metal door frames, storm shutters, interior lighting fixtures, thresholds, or screened enclosures. Clamshell packaging.