LEGO Slope, Inverted 45 6 x 1 Double with 1 x 4 Cutout (52501)

LEGO Slope, Inverted 45 6x1 Double with 1x4 Cutout (52501) has been used in at least 98 Lego sets over the past 8 years, since it was first used in 2005. This part can be most commonly found in Town sets where it has been included 53 times. You are most likely to find this Lego part in White, but keep an eye out for it in Medium Lavender which is the rarest colour, only being found in 1 set.