Barwalt 3/16"+ Hollow Leave-In Tile Spacers (500/pk) are professional-grade spacers designed to streamline tile installation. These industry-approved spacers feature a hollow design that allows grout to flow through and fill the joint completely, eliminating the need for spacer removal. This enables installers to grout a day earlier, saving time and labor. Made from durable, compressible material, the spacers can adjust up to 10% without further compression, accommodating minor tile size variations. Their extended length ensures stability when working with radius corner tiles or uneven edges. Available in plus (+) and T-shaped styles, the 3/16" size is ideal for standard tile layouts requiring precise, consistent spacing.