You get 15 Brand New brand name Commscope F-81 Coax Barrels 

Brand: Commscope     Model: SVF81GA

Barrel Features: 

• Use These To Splice Your Cable TV Or TV Antenna, Or Satellite Cable To Extend The Length
• Minimal Loss From These Connectors.
• They Can Be Used Indoors Or Outdoors - Shipped Quick From USA!
• Good Quality Connectors For Good Quality Connections!
• Same Connectors The Cable & Satellite Installers Use!
• Improved Conductivity. Made to work in any weather condition. 
• All Metal Construction, Anti-Corrosion Plated. 
• For Indoor/Outdoor use for a Tight Weather Sealed Connection. 
• One-Piece Design Eliminates Any Loose Parts. 
• Heavy Duty And Easy To Use. 
• Lightweight Ergonomic Design.

Here are more technical specifications:

Environmental Specifications
Operating Temperature	-40 °C to +60 °C (-40 °F to +140 °F)
Safety Standard	CE   |   EN 60728-4   |   SCTE
Electrical Specifications
Impedance	75 ohm
Operating Frequency Band	0 – 3000 MHz
Insertion Loss at Frequency Band, maximum	0.2 dB @ 0–1002 MHz   |   0.3 dB @ 1002–3000 MHz
Return Loss at Frequency Band, minimum	20 dB @ 2000–3000 MHz   |   25 dB @ 1002–2000 MHz   |   35 dB @ 0–1002 MHz
Shielding Effectiveness, minimum	120 dB
General Specifications
Device Type	F81 barrel splice
Brand	HomeConnect®
Dimensions
Length	28.19 mm   |   1.11 in
Mechanical Specifications
Material Type	Brass
Plating	Nickel
Regulatory Compliance/Certifications

Agency	Classification
RoHS 2011/65/EU	Compliant
ISO 9001:2008	Designed, manufactured and/or distributed under this quality management system