This is a black polyolefin heat shrink transition Y-style enclosure, typically provided in a bag or box for retail or bulk distribution.
You can click on the BUY or RFQ button to purchase 381A30171860 from an authorized Raychem TE Connectivity distributor.
You can download the 381A30171860 datasheet or visit the Raychem TE Connectivity website for support.
Raychem TE Connectivity