LEGO part 3660: Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]

LEGO part 3660, Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes], belongs to the Bricks Sloped category. It exists in 41 colours and appears in 2,285 sets of our database, from 1995 to 2026, for a total of 11,785 listed pieces. Its most common colour is Dark Bluish Gray.

Number 3660 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in dark bluish gray, it is 4211000.

Part 3660 through the years

The oldest set in our database that contains part 3660 is 6090 Royal Knight's Castle, released in 1995 in the Castle theme. It is still in use: the most recent set featuring it, 72153 Venusaur, Charizard and Blastoise, dates from 2026.

Its peak year is 2021, with 118 sets containing it. The set with the most copies is 10256 Taj Mahal: 98 copies, against an average of 5.2 per set.

It is spread across several themes, led by Star Wars (10%), Creator (9%) and City (9%). With 2,285 sets, it ranks no. 56 of 2,731 parts in our database and no. 6 of 105 in the Bricks Sloped category.

Sets containing part 3660, by period